package com.itheima.stock.service.impl;

import com.google.common.base.Strings;
import com.itheima.stock.mapper.SysUserMapper;
import com.itheima.stock.pojo.SysUser;
import com.itheima.stock.service.UserService;
import com.itheima.stock.utils.IdWorker;
import com.itheima.stock.vo.LoginReqVo;
import com.itheima.stock.vo.LoginRespVo;
import com.itheima.stock.vo.R;
import com.itheima.stock.vo.ResponseCode;
import org.apache.commons.lang3.RandomStringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Service("userService")
public class UserServiceImpl implements UserService {
    @Autowired
    private SysUserMapper sysUserMapper;

    @Autowired
    private PasswordEncoder passwordEncoder;

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private IdWorker idWorker;

    @Override
    public R<LoginRespVo> login(LoginReqVo vo) {
        if (vo==null || Strings.isNullOrEmpty(vo.getUsername()) ||
                Strings.isNullOrEmpty(vo.getPassword()) || Strings.isNullOrEmpty(vo.getRkey())
        || Strings.isNullOrEmpty(vo.getCode())){
            return R.error(ResponseCode.DATA_ERROR.getMessage());
        }

        String rCode = (String) redisTemplate.opsForValue().get(vo.getRkey());

        if (Strings.isNullOrEmpty(rCode) || !rCode.equals(vo.getCode())) {
            return R.error(ResponseCode.DATA_ERROR.getMessage());
        }
        //redis清除key
        redisTemplate.delete(vo.getRkey());

        //根据用户名查询用户信息
        SysUser user=this.sysUserMapper.findByUserName(vo.getUsername());
        //判断用户是否存在，存在则密码校验比对
        if (user==null || !passwordEncoder.matches(vo.getPassword(),user.getPassword())){
            return R.error(ResponseCode.SYSTEM_PASSWORD_ERROR.getMessage());
        }
        //组装登录成功数据
        LoginRespVo respVo = new LoginRespVo();
        //属性名称与类型必须相同，否则copy不到
        BeanUtils.copyProperties(user,respVo);
        return  R.ok(respVo);
    }

    @Override
    public R<Map> generateCode() {
        //1.生成4位数字验证码
        String checkCode = RandomStringUtils.randomNumeric(4);
        //2.获取全局唯一id
        String rkey=String.valueOf(idWorker.nextId());
        //验证码存入redis中，并设置有效期1分钟
        redisTemplate.opsForValue().set(rkey,checkCode,60, TimeUnit.SECONDS);
        //3.组装数据
        HashMap<String, String> map = new HashMap<>();
        map.put("rkey",rkey);
        map.put("code",checkCode);
        return R.ok(map);
    }
}
